Concrete-pile former.



Patented June 23, 1914.

5 u van tom wh/wma "ITER D. WALLETT, F PITTSBURGH, TENNSYLVANA.

CONCRETE-PELE FORMER.

Speccaizion of Letters Patent.

.ppication ied July 3, 1913.

rammed Jueces, 19M.

Serial No. 777,262.

`xnents in Concrete-Pile For-mers, of which f the following is s specificstion.

This 'invention relates to improvements in the art, of constructing concrete ues and more prticularly to apparatus :mapted Vto I thereof.

enable tud facilitate the construction The objeot 'in View is the provision oi' means :forproviding a pocket or opening. for receiving the materlal to form the cest comprising the pile7 means being so designed as to enable application of the ine,-

terial comprising the concrete pile directiy to the earth or other foundation beneath the pocketlforming apparatus, and also to enable ready removal of the pocket forming apparatus after the concrete piie has dened. I

The invention also comprises certain other constructions, combinations, and arrangements of parts as will be hereinafter more fully described and claimed.

In the accompanying drawings: Figure l.

is a longitudinal Vertical central section taken through an apparatus embodying the features of the present invention, the penetrating point being indicated ss'ciosed, Fig. 2 is a similar View of the seme with the penetrating pointV open and the ports positioned for receiving the concrete mass. Fig. 3 is a transverse section taken on the plane indicated by the-line 3-3 of Fig. l, looking downwardly. Fig. 4 is a detail pla-n View of the penetrating point.

The apparatus of this invention may be used as has heretofore been proposed in this art., namely, by' filling the hole made by the former, during the process of Withdrswei of said device.' An especial advantage of the invention resides in the fact shut-'e iliingtube or equivalent vmeans cooperates with the membersof a sectional point to posh tively maintin the latterin open positions duringfthe process of filling in the concrsses which forms the pile, vthere being no liiseiihood under these conditions that the members of said point will be closed the pressure of soft earth theresgainst, when the ape paratus is used in very soft ground.

Referring to the drawings by numerals, -1 indicates n tube having an expansibie point 2 at its lower end and at its upper end being engaged by a biock 3 preferably of metal. A wooden biock or 'other appro print-e cushion 4 rests upon or in the recess 'formed in the upper end of the block 3 and is sdapted to be struck by the hammer emplayed for driving the tube 1.y A nested inner tube 5 is arranged within the tube l,

sind, during the descent of the tubes, the two p tubes are connected by a cross pin 6.

The point may be formed in Various Ways but preferably consistsof u series of iupered pistes Z hinged as st S2 to the lower end of die tub euffii of the hinges 2 boing Comparini jy ioose for allowing freedom of mov'ment of 'ne Several plates Each plus@ '2' is preferabiy provided along one edge with a fiange 7 which cri-uses the several pistes to be crowded toward each other by the pressure of the. earth against the sei-versi fisnges during penetration. Each plate i3 is provided with 'an internni ridge Za disposed to serve asa oemV Each piste 2 is pivotnlly engaged by a chain 8 which extends upwardly Ato a point between the inner and outer tubes, that is, between tubes 3 and i, und the upper end of each chain S is engsged by u spring 9 which extends on upwardly and connected ni', ies upper end portion to the outer surface of the inner tube 5. The springs 9 are. maintained under sufiicient tension during descent oit' the tube l to insure the maintenance of the plates 2 in their relfftiveiy closedpositinn and thus insuring the constant presence of an appro` priste penetrating point While the tube l is being driven. tube 5 adjacent its .upper end portion and extend downwardly outside of the pipe 5 and through. the sides of the tube 1, each of seid sides bein preferably provided with a. roiler 11 or 'otgher appropriate antifrietion ineens pest which the cable 'l0 extends. The

outer or free ends of the cablesA ,i0 are pro 'vided with rings or oiher attaching Ineens Gebiss 10., l() aire fixed to the which are adapted to be engaged by the hooks of appropriate tackle, as for instance, tackle of differential pulleys, for pulling said 'ables longitudinall 1. After the pipe l has been driven to the desired elevation, the pin or rod 6 is removed, the cables 10 are drawn upwardly a distance sufficient for effecting 3 relative movement of the tubes 1 and 5, and

. down into the pipe l5 and is deposited on the earth or/ other base at tlielower open end of 'pipe 5; the supply of concrete being continued -until the pile is completed for the length of the pipe 5- or for any other appropriate less length desired. After vthe concrete has taken its initial set but before it is sufliciently hardened to interfere with the withdrawal of the pipes 1 and 5, the lifting devices engaging the cables 10 are caused to continue to lift until the said pipes are withdrawn from vabout the newly formed pile which is allowed to remain until it thoroughly hardens and thereupon any material may be packed about it or, if preferred, the space left by the removal of the tubes 1 and 5 may be filledwith fresh concrete. It is to be observed particularly that when the parts are in the position indicated in Fig. 2, the pipe 5 has free access to the ground and is in no sense interfered with by the parts'of the cap 2.

Having thus described my invention, what I claim as new is:

1. In a-concretev pile forming apparatus, a tube, a penetrating pointnormally closing the lower end of said tube and comprising sections expansible into open positions,

an inner tube arranged within the lirst mentioned tube and movable relative thereto, and means for causing relative movement of said tubes to project the inner tube into engagement with said penetrating point and -thereby spread the sections of the latter to open the same.

2. In a concrete `pile forming apparatus, a tube, a sectional penetrating point for said tube, an inner tube `arranged within the first-mentioned tube,v the two tubes being adapted .to have relative .movement with re-v .',lj spect to each other for shifting the sections ofthe pointand opening` thesame, and a cablecngagingthe inner .tube and extending downwardly therefrom through the outer tube and adapted to have its outer end engaged and subjected to draft Vfor effecting the relative movements of the tubes. 7

3. In a concrete pile forming apparatus, nested tubes, detachable means for sustaining. the tubes in their relative positions, a penetrating point permanently connected with the outer tube, said penetrating pointlbeing formed of movable plates, and means engaging the inner and outer tubes and shiftable relative thereto for effecting relative longitudinal movements of the tubes and simultaneously opening the parts of the penetrating point.

4. In a concrete pile forming apparatus,

the combination of nested tuhes and a penetrating point for the outer tube comprised of plates hinged to the outer tube and con@ verging to form a point, and 'means engaging the inner and outer tubes for effect ing relative movements thereof-forcausingf the inner tube to strike the plates and hinge the same outwardly for opening vthe point.` 5. In a concrete pile forming apparatus, the combination of nested tubes, yan openable point for the outer tube, and cables connected with the inner tube and extending longitudinally thereof and engagingilthe outer tube, said cables being adapted t0A` be moved longitudinally for effecting relative longitudinal movement of the tubes, the'finner tube being proportioned for striking and opening the penetrating point when the relative movement of the' tube is effected by movement of the cables.

6. In a concrete pile forming apparatus,

the combination of nested tubes, a series 0f plateshinged to the outer tube, and springs engaging the inner tube and connected with the plates and tensioned formaintaining the plates normally closed for retaining .the

7. In a concrete pile forming apparatus,"

the combination of nested tubes, a series-of l plates at the lower ends of the outer tube,

hinged connections for said plates connecteing the same to theouter, tube,`sai`d1=plates `being tapered for forming a penetrating point when in contact witheachother,

chains engaging the `several plates, `and springs connected with the chains vand-engaging the inner tube and tensioned for-retaining the plates in thev'penetrating point forming relation, the tubesbeing adapted to be shifted longitudinally.Withnrespectffto'v each otherV for causing the plates to be struck by the inner tube and opened-thereby; 8. In combination, a former tube `adapted "to penetrate the carth, a point- 'cdnnected' permanently with the lowerwen'd of said tube comprising sections adapted to-spread into open condition, and meansV for causing opening of said pointl and for holding its and to cause the fillingr tube to assume a po- 10 sections positively open during withdrawal t sition locking the point 1n its open eendiof the tube from the earth. 5 tion.

9. In combination, a former tube 'adapted l ln testimony whereof I alix mj! signature to penetrate the earth, an openable secin presence oi two Witnesses. tional point therefor carried by its lower OLIVER D. VVLL'EII". end, a fillin tube Within the former tube, Witneeses:

and means or causing relative movement l Cime. L. MILLER, of said tubes to oDen the Dolnt aforesaid l M. J. DoRsEY. 

